Utility function for screen geometry

src/blackgui/guiapplication.cpp

@@ -34,6 +34,7 @@
 #include <QAction>
 #include <QCloseEvent>
 #include <QApplication>
+#include <QDesktopWidget>
 #include <QCommandLineParser>
 #include <QDesktopServices>
 #include <QDir>
@@ -290,6 +291,20 @@ namespace BlackGui
         return CGuiUtility::isUsingHighDpiScreenSupport();
     }
 
+    QScreen *CGuiApplication::currentScreen()
+    {
+        QWidget *w = CGuiApplication::mainApplicationWidget();
+        const int s = QApplication::desktop()->screenNumber(w);
+        if (s < QGuiApplication::screens().size()) { return QGuiApplication::screens()[s]; }
+        return QGuiApplication::primaryScreen();
+    }
+
+    QRect CGuiApplication::currentScreenGeometry()
+    {
+        const QScreen *s = currentScreen();
+        return s->geometry();
+    }
+
     bool CGuiApplication::saveWindowGeometryAndState(const QMainWindow *window) const
     {
         if (!window) { return false; }

src/blackgui/guiapplication.h

@@ -27,6 +27,7 @@
 #include <QDialog>
 #include <QObject>
 #include <QEvent>
+#include <QScreen>
 #include <QPixmap>
 #include <QScopedPointer>
 #include <QString>
@@ -244,6 +245,13 @@ namespace BlackGui
         //! Uses the high DPI support?
         static bool isUsingHighDpiScreenSupport();
 
+        //! Current screen
+        static QScreen *currentScreen();
+
+        //! Current screen resolution
+        //! \remark logical resolution, not physical resolution
+        static QRect currentScreenGeometry();
+
         //! Parse scale factor if any
         static double parseScaleFactor(int argc, char *argv[]);